RasterizerSpan

天文上常用的zernike多项式数值模拟包(Astronomy on the common zernike polynomial numerical simulation package)

基于传输矩阵法的对布拉格光纤光栅反射谱的仿真研究(Fiber Bragg Grating Simulation of reflection spectra based on Transfer matrix method )

view 3d features displayed in color

利用谱减算法实现对航空录音的处理。主要思想是相对语音进行加噪声，然后再利用算法去噪声，比较前后信噪比的变化。根据实验结构，去噪效果明显。(The use of spectral subtraction algorithm for handling aviation record. The main idea is to increase the relative voice to the noise, and then use the algorithm to noise, signal to noise ratio before and after the change. According to the experimental structure, de-noising effect is obvious.)

说明：  多尺度样本熵程序，实例中用于一段轴承故障数据，简单易懂。MultiscalePermutationEntropy函数中的PermutationEntropy也可以单独拎出来计算单个样本熵。(The multi-scale sample entropy program, which is used for a section of bearing fault data in an example, is simple and easy to understand. The permutationentropy in the multiscale permutationentropy function can also be carried out separately to calculate the entropy of a single sample.)

一本关于MATLAB编程的经典英文教程，教你如何写出最简洁的matlab代码(MATLAB programming a classic English tutorial, teach you how to write a simple matlab code)

matlad code for corgnitive radio

负正弦加白噪声随机过程下使用MUSIC方法进行信号频率估计仿真，信号样本数去1000，估计的自相关矩阵为8阶，分别采用AIC和MDL准则估计信号源个数，并画出相应的MUSIC频率估计谱线。(Negative sine plus white noise random process method using MUSIC frequency estimation simulation, signal samples to 1000, the estimated autocorrelation matrix of order 8, AIC and MDL criteria were used to estimate the number of signal sources, and draw the corresponding MUSIC frequency spectrum estimation.)

对一段语音信号进行预处理，加窗，求过零率，短时能量，求各种语音信号的特征参数。(For a period of speech signal pre-processing, windowing, and zero-crossing rate, short-time energy, and all kinds of speech feature parameters.)

fundamentals in physics, molecules and quantum physic s